@huzaifa_ahmed Two English versions - One for the UK, another for the US. It's done all the time ("Further Adventures of SuperTed", "Mr. Men Show", "Bob the Builder", too many to list). A waste of money to dub it into a language that it's already in, pretty much.

With Thomas in particular though; Railway terminology is different enough in the UK and US.

Though the most prominent reason was just to wussify/politically correct it for American children... For instance just referring to The Fat Controller by his actual name, Sir Topham Hatt, rather than his nickname. And toning down the perceived harshness of the UK dialogue.

Good Example
From "The Sad Story of Henry" (UK) / "Come Out Henry!" (US)

UK Dialogue
"Eventually, even the Fat Controller gave up."
"We shall take away your rails" he said, "and leave you here for always, and always, and always."
"They took up the old rails and built a wall in front of him so that Henry couldn't get out of the tunnel anymore."

(slightly later, ending dialogue)
"Poor Henry had no steam to answer, his fire had went out. Soot and dirt from the tunnel had spoilt his lovely green paint and red stripes anyway. He wondered if he would ever be allowed to pull trains again. But I think he deserved his punishment, don't you?"

US Dialogue
"Eventually, even Sir Topham Hatt gave up."
"We shall take away your rails" he said, "and leave you here until you're ready to come out of the tunnel."
"They took up the old rails and built a wall in front of Henry so that other engines wouldn't bump into him."

(slightly later, ending dialogue)
"Poor Henry had no steam to answer, his fire had went out. Soot and dirt from the tunnel had spoilt his lovely green paint and red stripes anyway. How long do you think Henry will stay in the tunnel, before he overcomes his fear of the rain, and then decides to journey out again?"

Starting off, they had Ringo Starr come back and renarrate certain parts of the episodes he already narrated in the UK for the US (for 41 out of 52 ones he originally did anyhow). After he left, the US got George Carlin as narrator for Seasons 3-4 and re-narrating 1-2 while the UK got Michael Angelis. While the UK narrator stayed consistent for over 20 years, we constantly switched. After George left, Alec Baldwin came in and narrated Seasons 5-6 and Michael Brandon 7-16, until Mark Moraghan replaced both Michaels for both UK and US.

The CGI version is not bad, but I alway's loved the old version better. The Model Railway version of the series was my favorite, because in that version, all the engines looked so real and they would just have moving eyes, and clay faces that the producers would swap out there faces during production and change there faces to happy, sad or angry in the next scene. The Model version was better.

@Anthonyiscool64 The Man Behind the Voice of the Title character Retiring. I sure hope whoever takes over (either an Existing Cast Member of Someone new to the Cast) will voice all of Sherman's characters. In fact, I think Season 18 will be the last of the CGI Series, before a Series Change again.

Sherman gave the Perfect Fitting Voice for his Characters. He even booked for doing Henry, but didn't manage to get it.

@Anthonyiscool64 Hope that whoever takes over Sherman (probably an Existing Cast Member like William Hope or Someone new hired, like a Good Friend or Relative to Sherman) voices all the Characters he did, maybe even do a Voice where we could hardly tell that they've been recasted. But still, sorry it's had to come to the Man Behind the Title Character.

My favorite narrator will alway's be George Carlin. Because when he narrated the show he does awesome voices. My second favorite is Ringo Starr, third favorite is Michael Brandon and least favorite is Alec Baldwin. All the narrators are great, but George Carlin will alway's be my number 1! ;)